Like this one that has just been published in European Heart Journal – Digital Health.
In this study that included data on 88,026 individuals (average age: 61, over half were women, or to use jargon from the Lancet, under half were bodies without a vagina, so I guess that just over half did have a vagina) in the UK Biobank, the researchers claim the data show that “going to sleep between 10:00 and 11:00 pm is associated with a lower risk of developing heart disease compared to earlier or later bedtimes”.
Which led the researchers to go on to make this claim: “The optimum time to go to sleep is at a specific point in the body’s 24-hour cycle and deviations may be detrimental to health” and further, that “the riskiest time (to go to sleep) was after midnight, potentially because it may reduce the likelihood of seeing morning light, which resets the body clock”.
So why my skepticism?
Well, first, the data on sleep were collected over 7 days, and if you ask me, how well I sleep over just one particular week may not be at all indicative of how well – or not – I sleep most of the time.
Second, anyone who consistently goes to be after midnight probably has all sort of other health risk factors, and although research like this always aims to account for such differences, I find it very unlikely that they could do that.
Bottom line: Of course, it makes sense to get as much good sleep as you can but hey, yo also have to live your life, and if that means cutting back on sleep time, so be it.